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  • Need explanation for: The oxidation states of Cr in [Cr(H2O)6]Cl3, [Cr(C6H6)2], and K2[Cr(CN)2(O)2(O2)(NH3)] respectively are :

The oxidation states of Cr in [Cr(H2O)6]Cl3, [Cr(C6H6)2], and K2[Cr(CN)2(O)2(O2)(NH3)] respectively are :

  • Option 1)

    +3, 0, and +4

  • Option 2)

    +3, +4, and +6

  • Option 3)

    +3, +2, and +4

  • Option 4)

    +3, 0, and +6

 

Answers (1)

best_answer

As we learned

Oxidation number of central metal atom -

The charge the central atom would carry if all the ligands are removed along with the electron pairs that are shared with the central atom.

-

 

 \\*\left [ Cr(H_2O)_6 \right ]Cl_3=(+3)\\*\left [ Cr(C_6H_6)_2 \right ]=0\\*K_2\left [ Cr(CN)_2(O)_2(O_2)(NH_3) \right ]=(+6)\\*x-2-4-2=-2\\*x=+6


Option 1)

+3, 0, and +4

Option 2)

+3, +4, and +6

Option 3)

+3, +2, and +4

Option 4)

+3, 0, and +6

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